<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- /课程详情 开始 -->
    <section class="container">
      <section class="path-wrap txtOf hLh30">
        <a href="#" title class="c-999 fsize14">首页</a>
        \
        <a href="#" title class="c-999 fsize14">{{courseInfo.subjectLevelOne}}</a>
        \
        <span class="c-333 fsize14">{{courseInfo.subjectLevelTwo}}</span>
      </section>
      <div>
        <article class="c-v-pic-wrap" style="height: 357px;">
          <section class="p-h-video-box" id="videoPlay">
            <img
              height="357px"
              width="620px"
              :src="courseInfo.cover"
              :alt="courseInfo.subjectLevelTwo"
              class="dis c-v-pic"
            />
          </section>
        </article>
        <aside class="c-attr-wrap">
          <section class="ml20 mr15">
            <h2 class="hLh30 txtOf mt15">
              <span class="c-fff fsize24">{{courseInfo.subjectLevelTwo}}</span>
            </h2>
            <section class="c-attr-jg">
              <span class="c-fff">价格：</span>
              <b
                class="c-yellow"
                style="font-size:24px;"
              >￥{{courseInfo.price===0?'免费':courseInfo.price}}</b>
            </section>
            <section class="c-attr-mt c-attr-undis">
              <span class="c-fff fsize14">主讲： {{courseInfo.teacherName}}&nbsp;&nbsp;&nbsp;</span>
            </section>
            <section class="c-attr-mt of">
              <span class="ml10 vam">
                <em class="icon18 scIcon"></em>
                <a class="c-fff vam" title="收藏" href="#">收藏</a>
              </span>
            </section>
            <section class="c-attr-mt" v-if="Number(courseInfo.price===0) || isBuy">
              <a :href="'/player/'+courseInfo.id" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
            </section>
            <section class="c-attr-mt" v-else>
              <a href="#" title="立即购买" class="comm-btn c-btn-3" @click="generateOrder()">立即购买</a>
            </section>
          </section>
        </aside>
        <aside class="thr-attr-box">
          <ol class="thr-attr-ol clearfix">
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">购买数</span>
                <br />
                <h6 class="c-fff f-fM mt10">{{courseInfo.buyCount}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">课时数</span>
                <br />
                <h6 class="c-fff f-fM mt10">{{courseInfo.lessonNum}}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">浏览数</span>
                <br />
                <h6 class="c-fff f-fM mt10">{{courseInfo.viewCount}}</h6>
              </aside>
            </li>
          </ol>
        </aside>
        <div class="clear"></div>
      </div>
      <!-- /课程封面介绍 -->
      <div class="mt20 c-infor-box">
        <article class="fl col-7">
          <section class="mr30">
            <div class="i-box">
              <div>
                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                  <a name="c-i" class="current" title="课程详情">课程详情</a>
                </section>
              </div>
              <article class="ml10 mr10 pt20">
                <div>
                  <h6 class="c-i-content c-infor-title">
                    <span>课程介绍</span>
                  </h6>
                  <div class="course-txt-body-wrap">
                    <section
                      class="course-txt-body"
                      v-html="courseInfo.description"
                      v-if="courseInfo.description"
                    >{{courseInfo.description}}</section>
                  </div>
                </div>
                <!-- /课程介绍 -->
                <div class="mt50">
                  <h6 class="c-g-content c-infor-title">
                    <span>课程大纲</span>
                  </h6>
                  <section class="mt20">
                    <div class="lh-menu-wrap">
                      <menu id="lh-menu" class="lh-menu mt10 mr10">
                        <ul>
                          <!-- 文件目录 -->
                          <li
                            class="lh-menu-stair"
                            v-for="(chapter,index) in chapterVideoList"
                            :key="index"
                          >
                            <a href="javascript: void(0)" :title="chapter.title" class="current-1">
                              <em class="lh-menu-i-1 icon18 mr10"></em>
                              {{chapter.title}}
                            </a>
                            <ol class="lh-menu-ol" style="display: block;">
                              <li
                                class="lh-menu-second ml30"
                                v-for="(video,index) in chapter.children"
                                :key="index"
                              >
                                <a :href="'/player/'+video.videoSourceId" title>
                                  <span class="fr">
                                    <i class="free-icon vam mr10">免费试听</i>
                                  </span>
                                  <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>
                                  {{video.title}}
                                </a>
                              </li>
                            </ol>
                          </li>
                        </ul>
                      </menu>
                    </div>
                  </section>
                </div>
                <!-- /课程大纲 -->
              </article>
            </div>
          </section>
          <br />
          <div>
            <el-container>
              <el-header>评论区</el-header>
              <el-input placeholder="请输入内容" v-model="context" clearable></el-input>
              <el-button type="success" round @click="createComment" class="el-icon-success">确定发表</el-button>
              <ul class="commentli">
                <li v-for="(comment,index) in comments" :key="index">
                  <div>
                    <a href="#" class="nickname">用户{{comment.nickname}}</a>
                    <img width="35px" :src="comment.avatar" />
                  </div>
                  {{comment.content}}
                </li>
              </ul>
            </el-container>
          </div>
        </article>
        <aside class="fl col-3">
          <div class="i-box">
            <div>
              <section class="c-infor-tabTitle c-tab-title">
                <a title href="javascript:void(0)">主讲讲师</a>
              </section>
              <section class="stud-act-list">
                <ul style="height: auto;">
                  <li>
                    <div class="u-face">
                      <a href="#">
                        <img :src="courseInfo.avatar" width="50" height="50" alt />
                      </a>
                    </div>
                    <section class="hLh30 txtOf">
                      <a class="c-333 fsize16 fl" href="#">{{courseInfo.teacherName}}</a>
                    </section>
                    <section class="hLh20 txtOf">
                      <span class="c-999">{{courseInfo.intro}}</span>
                    </section>
                  </li>
                </ul>
              </section>
            </div>
          </div>
        </aside>
        <div class="clear"></div>
      </div>
    </section>
    <!-- /课程详情 结束 -->
  </div>
</template>

<script>
import courseApi from "@/api/course";
import orderApi from "@/api/order";
export default {
  data() {
    return {
      context: "",
      courseId: "",
      chapterVideoList: [],
      courseInfo: {
        description: ""
      },
      orderNo: "",
      comments: [],
      isBuy: false
    };
  },
  created() {
    this.courseId = this.$route.params.id;
    this.getFrontCourseInfo();
    this.getCommentByPage();
  },
  methods: {
    // 获取老师和课程章节小节信息
    getFrontCourseInfo() {
      courseApi.getCourseDetailInfo(this.courseId).then(response => {
        this.chapterVideoList = response.data.data.chapterVideoList;
        this.courseInfo = response.data.data.courseInfo;
        this.isBuy = response.data.data.isBuy;
        /*          if (this.courseInfo.description !== null) {
                      this.courseInfo.description = this.courseInfo.description.replace('<p>', '').replace('</p>', '')
                    }*/
      });
    },
    generateOrder() {
      orderApi.createOrder(this.courseId).then(response => {
        this.orderNo = response.data.data.orderNo;
        this.$router.push("/order/" + this.orderNo);
      });
    },
    /************************************ 以下是对评论的修改 ***************************************/
    // 添加评论
    createComment() {
      courseApi.addComment(this.courseId, this.context).then(response => {
        this.getCommentByPage();
        this.$message({
          type: "success",
          message: "发表成功"
        });
        this.context = "";
      });
    },
    // 首次进入查询评论
    getCommentByPage() {
      courseApi.getComment(1, 5, this.courseId).then(response => {
        this.comments = response.data.data.items;
        console.log(this.comments);
      });
    },
    // 删除评论
    deleteCommentById(id) {
      courseApi.deleteComment(id).then(response => {
        this.$message({
          type: "success",
          message: "删除成功"
        });
      });
    }
  }
};
</script>
<style>
.el-header,
.el-footer {
  background-color: #b3c0d1;
  color: #333;
  text-align: center;
  line-height: 60px;
}

.el-aside {
  background-color: #d3dce6;
  color: #333;
  text-align: center;
  line-height: 200px;
}

.el-main {
  background-color: #e9eef3;
  color: #333;
  text-align: center;
  line-height: 160px;
}

body > .el-container {
  margin-bottom: 40px;
}

.el-container:nth-child(5) .el-aside,
.el-container:nth-child(6) .el-aside {
  line-height: 260px;
}

.el-container:nth-child(7) .el-aside {
  line-height: 320px;
}
.commentli {
  text-indent: 20px;
  display: block;
  background-color: #ffffff;
  font-size: 19px;
  color: black;
}
.nickname {
  font-size: 20px;
  color: blue;
}
</style>